We took the Grand Circle trip from Paris to Normandy, and didn't need hotel, as we used the ship as our hotel for a couple of days before it sailed. The company was good enough to provide shuttle bus service from where the river boat was docked to the center of town and also provided a two day metro card for our use. If your question is meant to spend significant extra time in Paris,I can't help you because we didn't. We've been to Parisseveral times before, and had specific things we wanted to do on our own.